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Finding the Fourth Proportional to 234,089.40, 350,540.10 and 128,789.40

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Solution

The fourth proportional to 234,089.40, 350,540.10 and 128,789.40 is: 192,857.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    234,089.40 : 350,540.10 = 128,789.40 : x
  2. Step 2: Convert to fraction form
    234,089.40/350,540.10 = 128,789.40/x
  3. Step 3: Cross multiply
    234,089.40x = 350,540.10 × 128,789.40
  4. Step 4: Simplify right side
    234,089.40x = 45,145,849,154.94
  5. Step 5: Solve for x
    x = 45,145,849,154.94/234,089.40
  6. Step 6: Final answer
    x = 192,857.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.